Free Electronic Circuits & 8085 projects

Electronic projects with circuit diagram and 8085 microprocessor projects.

Electronic watchdog

Published on Oct 08 2009 // Voice circuits
Location: Home Voice Circuits Electronic watchdog 

The circuit shows an electronic watchdog. It has the ability to guard like ordinary dogs. It is capable to monitor a sorrounding area within 10 meters. Whenever someone enters the door , it will send a sound like a real dog barking. It maintains the bark for 10 seconds, and if the person did not leave, the electronic watchdog would have been called down.